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Description of Business and Basis of Presentation - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) State Bed Facility | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Accounting Policies [Abstract] |  |  |
Number of facilities | Facility | 253 |  |
Number of beds | Bed | 11,200 |  |
Number of operating states | State | 38 |  |
General and administrative expenses | $ | $ 153.3 | $ 124.3 | $ 108.2

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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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